Remote sensing upscaling of interception loss from isolated oaks: Sardon catchment case study, Spain

Hassan, S. M. Tanvir; Ghimire, Chandra Prasad; Lubczynski, M.

doi:10.1016/j.jhydrol.2017.08.016

Cited by 25 publications

(15 citation statements)

References 63 publications

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“…LAI values between 3.1 and 1.6 m 2 m -2 (1.1-0.6 m 2 m -2 in our case). Other studies with low-density stands of holm oak also reported negligible stemflow yields (Mateos and Schnabel, 2001;Hassan et al, 2017). On a tree scale, our data are much closer to the values reported elsewhere (Bellot and Escarré, 1998).…”

Section: Discussionsupporting

confidence: 89%

Rainfall partitioning after thinning in two low-biomass semiarid forests: Impact of meteorological variables and forest structure on the effectiveness of water-oriented treatments

Campo

González-Sanchis

Lidón

et al. 2018

Journal of Hydrology

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Section: Discussionsupporting

confidence: 89%

Rainfall partitioning after thinning in two low-biomass semiarid forests: Impact of meteorological variables and forest structure on the effectiveness of water-oriented treatments

Campo

González-Sanchis

Lidón

et al. 2018

Journal of Hydrology

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“…c Previous studies in Speulderbos report a LAI of 11: that value was estimated by the destructive method (cf. Heij and Schneider, 1991). For comparative reasons, we use the reported value using the LI-COR photometer.…”

Section: Energy Storagementioning

confidence: 99%

“…Our estimation of S is comparable with that of other old Douglas fir stands (Table 8) and supports the hypothesis that LAI might not be the main predictor of S for Dou- Klaasen et al (1998) reported an LAI measured by the destructive method, but LAI estimated with Li-COR-2000 was 8 m 2 m −2 (cf. Heij and Schneider, 1991). NA = not available.…”

Section: Canopy Storage Capacitymentioning

confidence: 99%

The influence of long-term changes in canopy structure on rainfall interception loss: a case study in Speulderbos, the Netherlands

Vaca

Tol

Ghimire

2018

Hydrol. Earth Syst. Sci.

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Abstract. The evaporation of intercepted water by forests is a significant contributor to both the water and energy budget of the Earth. In many studies, a discrepancy in the water and energy budget is found: the energy that is needed for evaporation is larger than the available energy supplied by net radiation. In this study, we analyse the water and energy budget of a mature Douglas fir stand in the Netherlands, for the two growing seasons of 2015 and 2016. Based on the wet-canopy water balance equation for these two growing seasons, derived interception losses were estimated to be 37 and 39 % of gross rainfall, respectively. We further scrutinized eddy-covariance energy balance data from these two consecutive growing seasons and found the average evaporation rate during wet-canopy conditions was 0.20 mm h−1. The source of energy for this wet-canopy evaporation was net radiation (35 %), a negative sensible heat flux (45 %), and a negative energy storage change (15 %). This confirms that the energy for wet-canopy evaporation is extracted from the atmosphere as well as the biomass. Moreover, the measured interception loss at the forest was similar to that measured at the same site years before (I = 38 %), when the forest was younger (29 years old, vs. 55 years old in 2015). At that time, the forest was denser and had a higher canopy storage capacity (2.4 mm then vs. 1.90 mm in 2015), but the aerodynamic conductance was lower (0.065 m s−1 then vs. 0.105 m s−1 in 2015), and therefore past evaporation rates were lower than evaporation rates found in the present study (0.077 mm h−1 vs. 0.20 mm h−1 in 2015). Our findings emphasize the importance of quantifying downward sensible heat flux and heat release from canopy biomass in tall forest in order to improve the quantification of evaporative fluxes in wet canopies.

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“…Considering the scarcity of fine spatial-resolution RS products, in the local scale IHMs, only tailor-made quantitative RS applications based on moderate, high-or very high-spatial resolution images can be utilized such as for example: (1) evapotranspiration mapping using Moderate Resolution Imaging Spectroradiometer (MODIS) with spatial resolution ranging from 0.5 to 1 km (Bastiaanssen et al 1998a, b;Su 2002) or at highresolution using Landsat 8 imagery with spatial resolution of 100 m (Senay et al 2016); (2) tree transpiration mapping using very high-resolution QuickBird or WorldView at 60-40 cm per pixel (Reyes-Acosta and Lubczynski 2013); (3) tree interception using QuickBird and WorldView at 60-40 cm per pixel (Hassan et al 2017); the aforementioned tree transpiration and tree interception mapping methods require tree-scaling functions, which for nine dominant Kalahari tree species are presented by Lubczynski et al (2017).…”

Section: Experience Of Using Remote Sensing In Data-scarce Central Kamentioning

confidence: 99%

Use of remote sensing and long-term in-situ time-series data in an integrated hydrological model of the Central Kalahari Basin, Southern Africa

Lekula

Lubczynski

2019

Hydrogeol J

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Distributed numerical models, considered as optimal tools for groundwater resources management, have always been constrained by availability of spatio-temporal input data. This problem is particularly distinct in arid and semi-arid developing countries, characterized by large spatio-temporal variability of water fluxes but scarce ground-based monitoring networks. That problem can be mitigated by remote sensing (RS) methods, which nowadays are applicable for modelling not only surface-water but also groundwater resources, through rapidly increasing applications of integrated hydrological models (IHMs). This study shows implementation of various RS products in the IHM of the Central Kalahari Basin (~200 Mm 2) multi-layered aquifer system, characterized by semi-arid climate and thick unsaturated zone, both enhancing evapotranspiration. The MODFLOW-NWT model with UZF1 package, accounting for variably saturated flow, was set up and calibrated in transient conditions throughout 13.5 years using borehole hydraulic heads as state variables and RS-based daily rainfall and potential evapotranspiration as driving forces. Other RS input data included: digital-elevation-model, land-use/land-cover and soils datasets. The model characterized spatio-temporal water flux dynamics, providing 13-year (2002-2014) daily and annual water balances, thereby evaluating groundwater-resource dynamics and replenishment. The balances showed the dominant role of evapotranspiration in restricting gross recharge to only a few mm yr −1 and typically negative net recharge (median, −1.5 mm yr −1), varying from −3.6 (2013) to +3.0 (2006) mm yr −1 (rainfall of 287 and 664 mm yr −1 respectively) and implying systematic water-table decline. The rainfall, surface morphology, unsaturated zone thickness and vegetation type/density were primary determinants of the spatiotemporal net recharge distribution.

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Remote sensing upscaling of interception loss from isolated oaks: Sardon catchment case study, Spain

Cited by 25 publications

References 63 publications

Rainfall partitioning after thinning in two low-biomass semiarid forests: Impact of meteorological variables and forest structure on the effectiveness of water-oriented treatments

Rainfall partitioning after thinning in two low-biomass semiarid forests: Impact of meteorological variables and forest structure on the effectiveness of water-oriented treatments

The influence of long-term changes in canopy structure on rainfall interception loss: a case study in Speulderbos, the Netherlands

Use of remote sensing and long-term in-situ time-series data in an integrated hydrological model of the Central Kalahari Basin, Southern Africa

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